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|  PDSH 973
& X0 H6 h5 k# {$ Z* s. r$ C& h, R# I M$ H
| Flux measurement tolerances
r/ d2 C% ]2 {+ i. ]8 J | 22.16
! U3 L8 x2 W$ }+ \, B | 60598-2-22(ed.3);am1;am2) o/ [2 a1 x0 r/ S
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Standard(s):1 a3 m8 d6 c5 w+ T
IEC 60598-2-22/1997 A1/2002 A2/2008! ]5 z! }! { l$ w* i
Subclause(s): 22.16
' q, R% c! s. oNo. Year PDSH 0973 2010. }& L8 O5 H. }, Q4 ^; ]
Category: LITE Developed by: ETF5 OSM/LUM7 I# N' L3 P+ {+ \
Subject:% G4 r. c0 H2 _* y O6 W7 k
Flux measurement tolerances
. {/ B8 b) ^% d* ^( X% `Key words:0 g' R3 K j1 l- p
- Follow up tests# M/ x! p% w0 x$ b, ]& l9 `
- 10% difference
5 [6 l1 Q, o3 K- Type tests9 W5 Q! m* H# {& ?+ H
To be approved at the 49th CTL Plenary Meeting, in 2012- R: D' [0 g, p" e* s( h
Question:, ]9 l- q& R+ j
When photometric testing is performed to verify the rated flux in emergency mode, we are often faced6 [) x! J4 _0 K+ ?
with differences between our results and those stated by the manufacturer. According to our experiences,
; }% j$ u+ y n, athis is quite normal if we take into account the series of uncertainties which affect a photometric
/ O* }) O1 ?% O o$ kmeasurement: different lamps used by Test Houses and manufacturers, production tolerances as regards) h- ]8 e' n, c8 \2 d4 J. L, Z4 d9 `
battery and inverter, different testing methodologies, etc. What is the maximum difference allowed so that
$ |: u% h) Q8 o3 n2 o5 xthe value declared by the manufacturer is deemed correct?9 M9 x# p3 D; g1 r; e5 ?* x3 g
Decision:% E u. ?0 i6 c; t7 n' N
For follow up test, 10% difference is acceptable. For type tests, no tolerance allowed.8 P4 P9 A3 M! i+ N) o0 |# g
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发表于 2012-9-16 12:51
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